Changing Channel on 5ghz
I've installed two AE (2013) as network extenders of a network created on a AirPort Extreme.
I decided to make a segmentation between 2.4 and 5 ghz networks so to have two different SSID.
On the AirPort Extreme I've set manually the channel for the 2.4ghz to 13 and for the 5ghz network to 48.
On the AE side, while the 2.4 ghz is correctly configured on the same channel (13) of the AirPort Extreme, the channel of the 5ghz is automatically se to 100.
How can I change the channel for both the AE to a lower number, for instance 48 as per the AirPort Extreme? This because I read that high number of channels is submitted to noise and interference: often my apple devices (atv3 or iPad) loss the 5ghz signal even if they are very close to the AE....
Thank you
OS X Mountain Lion (10.8.5)